ui: Cleanup class/struct forward declarations

blimp/client/core/settings/android/settings_observer_proxy.h

Index: blimp/client/core/settings/android/settings_observer_proxy.h
diff --git a/blimp/client/core/settings/android/settings_observer_proxy.h b/blimp/client/core/settings/android/settings_observer_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..db3b6f82fa035ce0ae1653f7188ffe08ecef1fc0
--- /dev/null
+++ b/blimp/client/core/settings/android/settings_observer_proxy.h
@@ -0,0 +1,45 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BLIMP_CLIENT_CORE_SETTINGS_ANDROID_SETTINGS_OBSERVER_PROXY_H_
+#define BLIMP_CLIENT_CORE_SETTINGS_ANDROID_SETTINGS_OBSERVER_PROXY_H_
+
+#include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/macros.h"
+#include "blimp/client/core/settings/android/settings_android.h"
+#include "blimp/client/core/settings/settings_observer.h"
+
+namespace blimp {
+namespace client {
+
+class SettingsObserverProxy : public SettingsObserver {
+ public:
+  static bool RegisterJni(JNIEnv* env);
+
+  SettingsObserverProxy(JNIEnv* env,
+                        jobject obj,
+                        SettingsAndroid* settings_android);
+  ~SettingsObserverProxy() override;
+
+  void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
+
+  // SettingsObserver implementation.
+  void OnBlimpModeEnabled(bool enable) override;
+  void OnShowNetworkStatsChanged(bool enable) override;
+  void OnRecordWholeDocumentChanged(bool enable) override;
+  void OnRestartRequired() override;
+
+ private:
+  base::android::ScopedJavaGlobalRef<jobject> java_obj_;
+
+  SettingsAndroid* settings_android_;
+
+  DISALLOW_COPY_AND_ASSIGN(SettingsObserverProxy);
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_CORE_SETTINGS_ANDROID_SETTINGS_OBSERVER_PROXY_H_